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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.